It's easy for salmon. With Salmon, the asian way is to put the left over on a hot pan and lightly pan fire it. Cook it with some ginger and shallots. Add a mixture of soy sauce, salt, sugar and oyster sauce. It's a pretty dish with rice.

Option 2.

Put them in the oven for 15 mins and it retains the texture pretty well..

Two words: fish tacos. I tried that suggestion last night, as well as the lemon/cream/dill pasta suggestion from user2951. Both were good - tacos win. Reheated in the oven on broil for about 5 minutes. For the record: I used corn torillas, spinach, and this sauce: soupaddict.wordpress.com/2009/06/06/… - Thanks.
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JonathanOct 21 '10 at 16:58